general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 1 PID: 4613 Comm: syz-executor.1 Not tainted 6.0.0-rc7-syzkaller-00081-gc3e0e1e23c70 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x227/0xb00 fs/jfs/jfs_logmgr.c:937
Code: b2 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 37 66 da fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 1a 66 da fe 48 8b 3b e8 32 89 b2
RSP: 0018:ffffc9000322fbe0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 6144bcefcb44e000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000322fd00 R08: ffffffff81b29a43 R09: ffffc9000322fb30
R10: fffff52000645f69 R11: 1ffff92000645f66 R12: dffffc0000000000
R13: ffff88801fa8d800 R14: 0000000000000000 R15: ffff888078ec0438
FS:  00005555564eb400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555564f4848 CR3: 0000000055bf6000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_syncpt+0x79/0x90 fs/jfs/jfs_logmgr.c:1041
 jfs_sync_fs+0x86/0xa0 fs/jfs/super.c:685
 sync_filesystem+0xe8/0x220 fs/sync.c:56
 generic_shutdown_super+0x6b/0x300 fs/super.c:474
 kill_block_super+0x79/0xd0 fs/super.c:1427
 deactivate_locked_super+0xa7/0xf0 fs/super.c:332
 cleanup_mnt+0x4ce/0x560 fs/namespace.c:1186
 task_work_run+0x146/0x1c0 kernel/task_work.c:177
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:169
 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:294
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc62628ba17
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff046d9a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc62628ba17
RDX: 00007fff046d9b5c RSI: 000000000000000a RDI: 00007fff046d9b50
RBP: 00007fff046d9b50 R08: 00000000ffffffff R09: 00007fff046d9920
R10: 00005555564ec8b3 R11: 0000000000000246 R12: 00007fc6262e45f6
R13: 00007fff046dac10 R14: 00005555564ec810 R15: 00007fff046dac50
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline]
RIP: 0010:lmLogSync+0x227/0xb00 fs/jfs/jfs_logmgr.c:937
Code: b2 fe 49 8d 5f f0 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 37 66 da fe 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 1a 66 da fe 48 8b 3b e8 32 89 b2
RSP: 0018:ffffc9000322fbe0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: 0000000000000030 RCX: 6144bcefcb44e000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000322fd00 R08: ffffffff81b29a43 R09: ffffc9000322fb30
R10: fffff52000645f69 R11: 1ffff92000645f66 R12: dffffc0000000000
R13: ffff88801fa8d800 R14: 0000000000000000 R15: ffff888078ec0438
FS:  00005555564eb400(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f881abb0000 CR3: 0000000055bf6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	b2 fe                	mov    $0xfe,%dl
   2:	49 8d 5f f0          	lea    -0x10(%r15),%rbx
   6:	48 89 d8             	mov    %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 37 66 da fe       	callq  0xfeda6653
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 30          	add    $0x30,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 1a 66 da fe       	callq  0xfeda6653
  39:	48 8b 3b             	mov    (%rbx),%rdi
  3c:	e8                   	.byte 0xe8
  3d:	32                   	.byte 0x32
  3e:	89                   	.byte 0x89
  3f:	b2                   	.byte 0xb2